DE732299C - Separately excited electrodynamic loudspeaker of high power - Google Patents

Separately excited electrodynamic loudspeaker of high power

Info

Publication number
DE732299C
DE732299C DET53694D DET0053694D DE732299C DE 732299 C DE732299 C DE 732299C DE T53694 D DET53694 D DE T53694D DE T0053694 D DET0053694 D DE T0053694D DE 732299 C DE732299 C DE 732299C
Authority
DE
Germany
Prior art keywords
field coil
electrodynamic loudspeaker
cooled
separately excited
coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DET53694D
Other languages
German (de)
Inventor
Dr Phil Heinrich Benecke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefunken AG
Original Assignee
Telefunken AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefunken AG filed Critical Telefunken AG
Priority to DET53694D priority Critical patent/DE732299C/en
Application granted granted Critical
Publication of DE732299C publication Critical patent/DE732299C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/022—Cooling arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Motor Or Generator Cooling System (AREA)

Description

Fremderregter elektrodynamischer Lautsprecher hoher Leistung Im Hauptpatent 71()011 ist ein elektrodynamischer Lautsprecher hoher Leistung beschrieben, der dadurch gekennzeichnet ist, daß die Schwingspule und gegebenenfalls bei Fremderregung auch die Feldspule mit von einer besonderen Kühlmediumquelle, z. B. von einem Gebläseaggregat gelieferten Luft, gekühlt wird.Separately excited high-performance electrodynamic loudspeaker In the main patent 71 () 011 describes a high-performance electrodynamic loudspeaker, the is characterized in that the voice coil and optionally with external excitation also the field coil with a special cooling medium source, z. B. from a blower unit supplied air, is cooled.

Es hat sich nun herausgestellt, daß die mit Luft erzielte Kühlwirkung hinsichtlich der Feldspule mitunter nicht ausreicht. Es wird daher gemäß der Erfindung die Schwingspule mit einem gasförmigen Kühlmittel, z. B. Luft, die Feldspule mit einer Kühlflüssigkeit, z. B. öl, gekühlt.It has now been found that the cooling effect achieved with air with regard to the field coil is sometimes not sufficient. It is therefore in accordance with the invention the voice coil with a gaseous coolant, e.g. B. air, the field coil with a cooling liquid, e.g. B. oil, cooled.

Die Abbildung veranschaulicht ein Ausführungsbeispiel des Erfindungsgegenstandes. Die Schwingspule i, die mit der Membran a verbunden ist, wird durch die durch die Bohrung 3 des -Mittelpols ¢ des Magnetsystems 8 geleitete Kühlluft gekühlt, da eine Flüssigkeitskühlung unter Umständen den. Frequenzgang des Lautsprechers beeinflussen und daher nicht immer benutzt werden kann. Der Weg der Kühlluft ist durch die ausgezogenen gezeichneten Pfeile gekennzeichnet. Die Feldspule wird durch von dem Antriebs-und Kühlmittelaggregat 5 gelieferte Kühlflüssigkeit, die durch den Kana16, der zwischen Feldspule 7 und Mittelpol q. vorgesehen ist, gekühlt. Der Kreislauf der Kühlflüssigkeit ist durch gestrichelte Pfeile veranschaulicht. Der die Feldspule 7 enthaltende innere Paum des Magnetsystems 8, der allseitig abgeschlossen ist, besitzt eine oder mehrere fiffnungen 9, durch die über den Kanal io die Kühlflüssigkeit zum Aggregat 5 zurückgeleitet wird.The figure illustrates an exemplary embodiment of the subject matter of the invention. The voice coil i, which is connected to the diaphragm a, is driven by the Bore 3 of the -Middle Pole ¢ of the magnet system 8 cooled air guided, since a Liquid cooling under certain circumstances the. Affect the frequency response of the loudspeaker and therefore cannot always be used. The path of the cooling air is through the pulled out marked arrows. The field coil is driven by the drive and Coolant unit 5 delivered coolant through the Kana16, the between Field coil 7 and center pole q. is provided, cooled. The coolant circuit is illustrated by dashed arrows. The field coil 7 containing the inner Paum of the magnet system 8, which is closed on all sides, has one or more Openings 9 through which the cooling liquid is returned to the unit 5 via the channel io will.

Selbstverständlich sind auch andere M<iglichkeiten für die Kühlung der Feldspule denkbar, beispielsweise könnte die Kühlflüssigkeit im Kreislauf um den äußeren der Feldspule herumgeführt werden, oder .es könnten Kühlkanäle innerhalb der Feldspule vorgesehen sein.Of course, there are also other options for cooling the field coil conceivable, for example, the cooling liquid in the circuit could be around the outside of the field coil, or there could be cooling channels inside the field coil be provided.

Claims (1)

PATENTANSPRÜCHE: i. Fremderregter elektrodynamischer Lautsprecher hoher Leistung nach Patent 719oii, bei dem die Schwingspule und die Feldspule gekühlt ist, dadurch gekennzeichnet, daß die Schwingspule mit einem gasförmigen Kühlmittel, z. B. Luft, die Feldspule mit einer Kühlflüssigkeit gekühlt ist. Elektrodynamischer Lautsprecher nach Anspruch i, dadurch gekennzeichnet, daß die Schwingspule über einen den Mittelpol durchsetzenden zentralen Kanal, der Abzweigungen zu einem die Schwingspule enthaltenden abgeschlossenen Raum besitzt, gekühlt ist, während die Feldspule über einen zwischen Feldspule und Mittelpol angeordneten Kanal von der Kühlflüssigkeit bespült ist.PATENT CLAIMS: i. Separately excited electrodynamic loudspeaker high performance according to patent 719oii, in which the voice coil and the field coil are cooled is, characterized in that the voice coil with a gaseous coolant, z. B. air, the field coil is cooled with a cooling liquid. More electrodynamic Loudspeaker according to claim i, characterized in that the voice coil has a central channel penetrating the center pole, the branches to one of the Has a closed space containing the voice coil, is cooled while the From the field coil via a channel arranged between the field coil and the center pole Coolant is flushed.
DET53694D 1938-10-25 1940-04-26 Separately excited electrodynamic loudspeaker of high power Expired DE732299C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET53694D DE732299C (en) 1938-10-25 1940-04-26 Separately excited electrodynamic loudspeaker of high power

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DET51174D DE719011C (en) 1938-10-25 1938-10-25 High performance electrodynamic loudspeaker with cooled voice coil
DET53694D DE732299C (en) 1938-10-25 1940-04-26 Separately excited electrodynamic loudspeaker of high power

Publications (1)

Publication Number Publication Date
DE732299C true DE732299C (en) 1943-02-26

Family

ID=7563590

Family Applications (4)

Application Number Title Priority Date Filing Date
DET51174D Expired DE719011C (en) 1938-10-25 1938-10-25 High performance electrodynamic loudspeaker with cooled voice coil
DET53305D Expired DE719947C (en) 1938-10-25 1940-01-19 High performance electrodynamic loudspeaker with cooled voice coil
DET53694D Expired DE732299C (en) 1938-10-25 1940-04-26 Separately excited electrodynamic loudspeaker of high power
DET55999D Expired DE732300C (en) 1938-10-25 1941-08-01 High performance electrodynamic loudspeaker with cooled field and voice coil

Family Applications Before (2)

Application Number Title Priority Date Filing Date
DET51174D Expired DE719011C (en) 1938-10-25 1938-10-25 High performance electrodynamic loudspeaker with cooled voice coil
DET53305D Expired DE719947C (en) 1938-10-25 1940-01-19 High performance electrodynamic loudspeaker with cooled voice coil

Family Applications After (1)

Application Number Title Priority Date Filing Date
DET55999D Expired DE732300C (en) 1938-10-25 1941-08-01 High performance electrodynamic loudspeaker with cooled field and voice coil

Country Status (3)

Country Link
US (1) US2270787A (en)
DE (4) DE719011C (en)
FR (1) FR869648A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259550A (en) * 1978-04-15 1981-03-31 Yoshiro Nakamatsu Acoustic device with floating vibrating means

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2524780A (en) * 1945-07-07 1950-10-10 Rola Company Inc Pole piece centering arrangement for permanent magnet electrodynamic loudspeakers
JPH06501354A (en) * 1990-10-09 1994-02-10 スタージェ・アコムパニー・ベスローテン・フェンノートシャップ Dynamic loudspeaker with cooling device
NL9002510A (en) * 1990-11-16 1992-06-16 Stage Accompany B V SPEAKER WITH COOLING.
US8577074B2 (en) * 2011-02-14 2013-11-05 Robert Bosch Gmbh Vortex cooling of voice coils
CN109005491B (en) * 2018-07-03 2023-06-13 惠州学院 MEMS matrix microphone for measuring travel environmental noise with golden spiral structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259550A (en) * 1978-04-15 1981-03-31 Yoshiro Nakamatsu Acoustic device with floating vibrating means

Also Published As

Publication number Publication date
DE719947C (en) 1942-04-25
US2270787A (en) 1942-01-20
FR869648A (en) 1942-02-09
DE732300C (en) 1943-02-26
DE719011C (en) 1942-03-26

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